Quote:
Originally Posted by Akash Rastogi
I'm not sure what foam rollers you speak of, but a lot of teams just purchase PVC from Home Depot or a similar store for their rollers. It is just pvc tubing that teams can machine grooves into or put rings around the PVC pipe to capture the polycord in place, but it is nothing special.
Other teams use other materials for their tubing: aluminum, acetal, polycarbonate, etc.
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I don't have a picture on me, but for some of the bots I saw, the grooves were HUGE and DEEP.
Like, anywhere from 1/4" to 1/2" deep. I haven't seen PVC with a wall that thick, unless they were using a bunch of small segments of PVC connected by some sort of fittings to simulate grooves.